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IDS Forum

RE: Dbspace question

Posted By: Larry Sorensen
Date: Thursday, 2 August 2012, at 7:37 p.m.

In Response To: RE: Dbspace question (Madison Pruet)

I did a couple of checkpoints. Successful. Now what?

-----Original Message-----
From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of
Madison Pruet
Sent: Thursday, August 02, 2012 5:13 PM
To: ids@iiug.org
Subject: RE: Dbspace question [27918]

Do a couple of checkpoints.

From: "Larry Sorensen" <lsorensen25@msn.com>
To: ids@iiug.org,
Date: 08/02/2012 06:04 PM
Subject: RE: Dbspace question [27917]
Sent by: ids-bounces@iiug.org

I dropped the database in the target instance. (It has other databases = as
well) When I try to do the onload, I receive the message

Error allocating extent pages.
ISAM error: no more extents

There should be room in the dbspace because I deleted the previous data=
base

that I was going to refresh and I am getting nowhere near completion of= the

onload.

Any ideas?

-----Original Message-----
From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of L=
arry

Sorensen
Sent: Thursday, August 02, 2012 3:36 PM
To: ids@iiug.org
Subject: RE: Dbspace question [27916]

Thank you. I will try it.

-----Original Message-----
From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of K= ern
Doe
Sent: Thursday, August 02, 2012 3:09 PM
To: ids@iiug.org
Subject: Re: Dbspace question [27915]

Say, your database (source) created in dbs1 but all your tables are in dbs2,
when you do onload (to target), of course, you must specify -d dbs1 (it= is
where the database is in), but all your tables are automagically onload= ed
to
dbs2 -- as far as I remember.

HOWEVER, I must mention this issue based on my past experience involvin= g
onunload/onload with older version of IDS (9.4?) was that if you have
created dbspaces with different page sizes, onunload of database level
appears to work but then onload will fail -- I have not tried with the
latest version so I do not know if IBM has fixed this bug.

I encourage you to test all these out to see for yourself.

________________________________
From: Larry Sorensen <lsorensen25@msn.com>
To: ids@iiug.org
Sent: Thursday, August 2, 2012 4:46 PM
Subject: RE: Dbspace question [27914]

So, what you are thinking is that, if I do not use onload -d dbspace (t= he
-d option), it will just use the same dbspaces as the unload came from rat=
her than the rootdbs, which I was worried it might?

Larry

-----Original Message-----
From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of K= ern
Sent: Thursday, August 02, 2012 2:42 PM
To: ids@iiug.org
Subject: Re: Dbspace question [27913]

continue using onunload and onload, it should work as long as your targ= et
instance has identical or similar dbspace layout. Why don't you test it=

out,
it should take 15 min and you'll know the answer.
For example, generate a schema of your source database but modify or comment
out extent sizes (to save space). On the target instance, recreate the =
same

database with this schema. Now run onunload, drop the database, then on=
load

On Aug 2, 2012, at 3:22 PM, "Larry Sorensen" <lsorensen25@msn.com> wrot=
e:

> OK. I am under the gun here to get this done today. What you are
> telling me is that I can no longer use onload, now, because I have tw=
o
> dbspaces. Your utilities sound attractive, but there will be quite a
> learning curve, I am afraid. Do you have any documentation for doing
> this and setting everything up on a Solaris server? Are there any
> other suggestions for just getting me by today?
>
> Thank you for your help.
>
> Larry
>
> -----Original Message-----
> From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of=

> Art Kagel
> Sent: Thursday, August 02, 2012 1:10 PM
> To: ids@iiug.org
> Subject: Re: Dbspace question [27909]
>
> You could use dbexport with the -ss option then dbimport or for a
> faster copy use my dbexport/dbimport replacement utilities myexport &=

myimport.
> With the -E option these scripts use external tables to move the data=

> about twice as fast as dbexport & dbimport. There is also a parallel
> mode option
> (-p) to unload the entire database in parallel which is often even
faster.

> You will need the packages myexport and utils2_ak (for my dbschema
> replacement utility myexport that has schema support for
> dbexport/dbimport and myexport/myimport).
>
> Another alternative would be to use my dbcopy utility (also in
> utils2_ak) along with the mkdbcopy.awk script in the package
> utils4_ak. Mkdbcopy.awk will generate a shell script from a dbschema
> or myschema output file to copy the entire database directly from one=

> server instance to the other without the intermediate disk file(s) by=

> using dbcopy. Dbcopy is very fast and if you add in the time savings
> of not having to write the export files and read them back in, it is
usually faster even than that.
>
> Art
>
> Art S. Kagel
> Advanced DataTools (www.advancedatatools.com)
> Blog: http://informix-myview.blogspot.com/
>
> Disclaimer: Please keep in mind that my own opinions are my own
> opinions and do not reflect on my employer, Advanced DataTools, the
> IIUG, nor any other organization with which I am associated either
> explicitly, implicitly, or by inference. Neither do those opinions
> reflect those of other individuals affiliated with any entity with
> which I am affiliated nor those of the entities themselves.
>
> On Thu, Aug 2, 2012 at 2:22 PM, Larry Sorensen <lsorensen25@msn.com>
wrote:
>
>> Another question:
>>
>> Previously, we have used unload and onunload to copy a database from=

>> one instance to another on the same server. I believe that the
>> database has been spread across two dbspaces, whereas previously all=

>> the tables were located in only one dbspace. The command that we use=
d
>> to use to load the database was
>>
>> onload -s 419400000 -d dbs1 -t /dev/rmt/1 database1
>>
>> The reason that we had to move some of the tables to a different
>> dbspace is that some of the tables were so large, they were running
>> out of extents and we had to create a dbspace with a larger page siz=
e.
>>
>> So, my question is, what is an equivalent command to copy this
>> database now that it occupies two dbspaces on the target?
>>
>> -----Original Message-----
>> From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf O=
f
>> Larry Sorensen
>> Sent: Thursday, August 02, 2012 12:04 PM
>> To: ids@iiug.org
>> Subject: RE: Dbspace question [27906]
>>
>> IDS 11.50.FC5
>> Solaris 10
>>
>> What is the command again, to see what dbspaces a database is using?=

>>
>> Larry
>>
>>
>> ********************************************************************=
*
>> *
>> ******
>> ***
>> Forum Note: Use "Reply" to post a response in the discussion forum.
>>
>>
>>
>>
> *********************************************************************=
*
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> ***
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>>
>>
>
> --14dae934037169d5c104c64d29de
>
> *********************************************************************=
*
> ******
> ***
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>
>
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